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Not enough Power

M

majoho

Weaksauce
Joined
Jan 25, 2003
Messages
75
*SIGH*

I just purchased an ASUS 8800GTX card and I wasn't surprised when my current PSU didn't provide enough power for that card, I kinda expected that.

Then I went and purchased a new PSU that I think should be able to work, but it doesn't I still get the not enough power indicator :mad:

I was looking through the options and decided on the Thermaltake Toughpower 750W

http://www.thermaltake.com/product/Power/ToughPower/W0117/w0117.asp

It simply should work I don't get why it doesn't

The rest of my system

Core2 Duo 6600
4x512 DDR2
1x10,000 rpm sata
1x7,200 rpm sata
1xDVD R/W sata
1 SB XFI

Nothing is OC'ed, case and MB is a DELL XPS401 I think it's called in the US, it's called Dimension 9200 where I live.

I'll try to remove some components and see if it helps, but post any suggestions that you have to make this POS work (sorry but this is ticking me off).

EDIT: don't mind my sig it's ancient.
 
meh

Removed 2 DIMMs, one HDD and the DVD R/W and it still says the same.
 
I see that the Toughpower 850 is on the recommended PSU list, I guess mine wont do...

unfortunately I can't return the PSU since the label on it has been scratched so I'm getting rid of the 8800 - they really need to put something on the pages listing the exact requirements for using the card.
 
I think you got a bad card. Are you connecting both the PCIE connectors? I ran a single GTX on an Enermax Liberty 500 ...
 
Yeah I am.

And the card will run, it just gives the power warning message and the performance is low (however the GPU/mem speed doesn't seem to be lowered).

The PSU is specced at 18A per rail which apparently isn't enough, the 850W I mentioned in my other post is 30A.
 
It needs 30A on the 12V total, not per rail. That 750 is rated at 60A combined... Might be an issue with that dell MB?
 
I guess that could be a possibility I did consider it myself and I could try and rebuild my Nforce4 machine and see if I can get it to work on that.

I'll give it a try, thanks :)
 
majoho said:
I guess that could be a possibility I did consider it myself and I could try and rebuild my Nforce4 machine and see if I can get it to work on that.

I'll give it a try, thanks :)
Click to expand...

:) let us know if you get it to work
 
Ok I tried it in the older system

Nforce 4 MB (ASUS A8N..something)
AMD XP 3500+
1 GB DDR ram
IDE Harddrive
CD drive

Same error message, so I guess one of the parts is faulty... now the question is which one :/
 
PSU or vid card are the most likely culprits. Can you exchange the GTX to rule it out?
 
Oh I'm well aware that's it's one of those two - that's what this is all about ;)

I've come to the conclusion that it has to be the video card by now.

Something I didn't mention was that before I got the 750W PSU I tried to run the card with a dedicated 510W PSU and that didn't work either.

I'm going to exchange the video card at the shop.

Thanks for the replies :)
 
For others looking at a 8800gtx it doesnt really use as much power as ppl believe u dont need anything near a 700w psu for it... look at my sig i got 2hdd , 2xdvd , 4x ram sticks , a overclocked 4600+ to 2.8 and a overclocked 8800gtx on my little old 480w.
 
Pulsar said:
It needs 30A on the 12V total, not per rail. That 750 is rated at 60A combined... Might be an issue with that dell MB?
Click to expand...
When the PSU is split up into separate 12V rails, the devices attached to that rail are limited to the available amps of just that rail.
Now if you use a adapter and feed the Vid card from two rails , then you should be fine !
 
Currently I have a Core 2 Duo 6400 @ 3.2 with 2gb ram dvd rw, 4x 120mm fans 1x200mm fan 5 SATA II Hds and an 8800gtx all on a liberty 500w
 
oldbrave said:
When the PSU is split up into separate 12V rails, the devices attached to that rail are limited to the available amps of just that rail.
Now if you use a adapter and feed the Vid card from two rails , then you should be fine !
Click to expand...

Yes, but there is still no split rail PSU capable of delivering 30A on a single rail. One of my GTXs is running on a dedicated rail, which is 18A and the other is on a shared one, also 18A. So that 30A per rail, per GTX is a bit unrealistic.
 
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